| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [be] [adv] [adj] [verb] that | 554 |
|
| 2 | it [be] [adv] difficult [verb] [conj] | 64 |
|
| 3 | it [be] [adv] difficult [verb] that | 39 |
|
| 4 | it [be] [adv] difficult [verb] that | 17 |
|
| 5 | [pron] [be] [adv] difficult [verb] that | 17 |
|
| 6 | it [be] [adv] difficult [verb] [that] | 17 |
|
